This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Recently rebuilt a S&S model S c 1931. The measured key ratios for the = sharps were .48, for the naturals .51. I considered moving the capstans = on the sharps so the total leverage on each would be equal. But when I = started to set up samples and take measurements, I found that the FW = pattern was smooth and the corresponding SWR's were equal. I would have = expected that sharps to need less FW or, with a smooth line front = weighting, a varied SWR. Somewhere in the system something else = compensated for the different key ratios. Question is where? All new = parts, strike weights smoothed, BW all equal. the job is now completed. = I left the capstan positions alone and the FW curve was pretty smooth, = SWR all 5.9 - 6.0. A few bumps along the road as is often the case, but = one would have expected 6-10 grams less FW on the sharps. Any opinions? David Love =20 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/d3/86/2b/12/attachment.htm ---------------------- multipart/alternative attachment--
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